<template>
    <div>
        <!-- 面包屑导航区域 -->
         <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
        </el-breadcrumb>  
          <!--卡片视图区域  -->
          <el-card>
              <!-- 添加角色按钮区域 -->
              <el-row>
                  <el-col>
                      <el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
                  </el-col>
              </el-row>
              <!-- 添加角色列表内容区域 -->
              <el-table :data="roleList" border stripe>
                  <!-- 展开列 -->
                  <el-table-column type="expand">
                      <template slot-scope="scope">
                          <el-row :class="['bdbottom',i1 ===0?'bdtop':'','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
                              <!-- 渲染一级权限 -->
                              <el-col :span="5" >
                                  <el-tag closable @close="reomveRightById(scope.row,item1.id)">
                                      {{item1.authName}}
                                  </el-tag>
                                  <i class="el-icon-caret-right"></i>
                              </el-col>
                              <!-- 渲染二三级权限 -->
                              <el-col :span="19">
                                  <el-row :class="[i2 ===0?'':'bdtop','vcenter']" v-for="(item2,i2) of item1.children" :key="item2.id">
                                      <el-col :span="6" >
                                        <el-tag closable type="success" @close="reomveRightById(scope.row,item2.id)">
                                                {{item2.authName}}
                                        </el-tag>
                                        <i class="el-icon-caret-right"></i>
                                      </el-col>
                                      <el-col :span="18">
                                          <el-tag closable type="warning" v-for="(item3) of item2.children" :key="item3.id" @close="reomveRightById(scope.row,item3.id)">
                                              {{item3.authName}}
                                          </el-tag>
                                      </el-col>
                                  </el-row>
                              </el-col>
                          </el-row>
                        <!-- <pre>
                           {{scope.row}} 
                        </pre>  -->
                      </template>
                  </el-table-column>
                  <!-- 索引列 -->
                  <el-table-column type="index"></el-table-column>
                   <el-table-column label="角色名称" prop="roleName"></el-table-column>
                   <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
                   <el-table-column label="操作" width="300px">
                       <template slot-scope="scope">
                           <el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row.id)" >编辑</el-button>
                           <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeUserById(scope.row.id)">删除</el-button>
                           <el-button type="warning" size="mini" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限</el-button>
                       </template>
                   </el-table-column>
              </el-table>
              <!-- 添加角色的对话框区域 -->
              <el-dialog
                title="添加用户"
                :visible.sync="addDialogVisible"
                width="50%"
                @close="addDialogClosed"
                >
                <!-- 内容主体区 -->
                <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="80px">
                    <el-form-item label="角色名称" prop="roleName">
                        <el-input v-model="addForm.roleName"></el-input>
                    </el-form-item>
                     <el-form-item label="角色描述" prop="roleDesc">
                        <el-input v-model="addForm.roleDesc"></el-input>
                    </el-form-item>
                </el-form>
                <!-- 底部区 -->
                <span slot="footer" class="dialog-footer">
                    <el-button @click="addDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="addUser">确 定</el-button>
                </span>
            </el-dialog>
            <!-- 编辑用户的对话框区域 -->
            <el-dialog
                title="编辑用户"
                :visible.sync="editDialogVisible"
                width="50%"
                @close="editDialogClosed"
                >
                <!-- 内容主体区 -->
                <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="80px">
                    <el-form-item label="角色名称" prop="roleName">
                        <el-input v-model="editForm.roleName"></el-input>
                    </el-form-item>
                     <el-form-item label="角色描述" prop="roleDesc">
                        <el-input v-model="editForm.roleDesc"></el-input>
                    </el-form-item>
                </el-form>
                <!-- 底部区 -->
                <span slot="footer" class="dialog-footer">
                    <el-button @click="editDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="editUser">确 定</el-button>
                </span>
            </el-dialog>
            <!-- 分配权限的对话框区域 -->
            <el-dialog
                title="分配权限"
                :visible.sync="setRightDialogVisible"
                width="50%"
                @close="setRightDialogClosed"
                >
                <el-tree :data="rightslist" :props="treeProps"  show-checkbox node-key="id"  default-expand-all :default-checked-keys="defKeys" ref="treeRef">

                </el-tree>
                <span slot="footer" class="dialog-footer">
                    <el-button @click="setRightDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="allotRights">确 定</el-button>
                </span>
                </el-dialog>
          </el-card>
    </div>
</template>
<script>
export default {
    data() {
        return {
            // 所有角色列表数据
            roleList:[],
            addForm:{
                roleName:'',
                roleDesc:''
            }, 
            addFormRules:{
                roleName:[
                     {required:true,message:'请输入角色名称',trigger:'blur'},
                ]
            },
            // 控制添加用户对话框显示与隐藏
            addDialogVisible:false,
            editForm:{},
            editFormRules:{
                roleName:[
                     {required:true,message:'请输入角色名称',trigger:'blur'},
                ]
            },
            editDialogVisible:false,
            // 展示分配权限的对话框显示与隐藏
            setRightDialogVisible:false,
            // 所有权限的数据
            rightslist:[],
            // 树形控件的属性绑定对象
            treeProps:{
                label:'authName',
                children:'children'
            },
            // 默认选中的节点id数组
            defKeys:[],
            roleId:''
            
        }
    },
    created() {
        this.getRolesList()
    },
    methods: {
        async getRolesList(){
            const {data:res} = await this.$http.get('roles')
            if(res.meta.status !==200)return this.$message.error('获取信息失败')
            this.roleList = res.data
            console.log(this.roleList)
        },
        // 监听添加用户对话框关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        // 添加用户事件
        addUser(){
            this.$refs.addFormRef.validate(async valid=>{
                console.log(valid)
                if(!valid)return
                // 添加用户的网络请求
                const {data:res} = await this.$http.post('roles',this.addForm)
                if(res.meta.status !=201)return this.$message.error('添加用户失败')
                this.$message.success('添加用户成功')
                this.addDialogVisible = false
                this.getRolesList()
            })
        },
        // 编辑用户
         async showEditDialog(id){
            this.editDialogVisible = true
             const {data:res} = await this.$http.get('roles/'+id)
             if(res.meta.status !==200)return this.$message.error('获取角色信息失败')
             this.editForm = res.data
        },
        editDialogClosed(){
             this.$refs.editFormRef.resetFields()
        },
        editUser(){
            this.$refs.editFormRef.validate(async valid=>{
                if(!valid)return
                console.log(this.editForm.id)
                const {data:res} = await this.$http.put('roles/'+this.editForm.roleId,{roleName:this.editForm.roleName,roleDesc:this.editForm.roleDesc})
                console.log(res)
                if(res.meta.status !==200)return this.$message.error('修改用户信息失败')
                 // 关闭对话框
                this.editDialogVisible = false
                // 刷新数据列表
                 this.getRolesList()
                // 提示修改成功
                this.$message.success('更新角色信息成功')
            })
        },
        async removeUserById(id){
            const confirmResult=await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err=>err)
             if(confirmResult !=='confirm'){
                 return this.$message.info('已取消删除')
             }
            const {data:res} = await this.$http.delete('roles/'+id)
            if(res.meta.status !==200)return this.$message.error('删除失败')
            this.$message.success('删除成功')
            this.getRolesList()
        },
        // 根据id移除权限事件
        async reomveRightById(role,rightId){
            // 弹框提示是否删除
            const confirmResult = await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
            }).catch(err=>err)

            if(confirmResult !=='confirm'){
                return this.$message.info('取消了删除')
            }
            const {data :res} =await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
            if(res.meta.status !==200)return this.$message.error('删除权限失败')
            this.$message.success('删除权限成功')
            role.children =res.data
            // this.getRolesList()
        },
        // 展示分配权限的对话框
        async showSetRightDialog(role){
            this.roleId =role.id
            // 获取所有权限的数据
            const {data:res} = await this.$http.get('rights/tree')
            if(res.meta.status !==200)return this.$message.error('获取所有权限数据失败')
            
            this.rightslist = res.data
            // console.log( this.rightslist)
            // 递归获取三级节点的id
            this.getLeafKeys(role,this.defKeys)
            console.log(this.defKeys)
            this.setRightDialogVisible = true
        },
        // 通过递归的形式，获取角色下是所有三级权限的id，并保存在defKeys中
        getLeafKeys(node,arr){
            // 如果当前node节点不包含children属性，则是三级权限
            if(!node.children){
                return arr.push(node.id)
            }
            node.children.forEach(item=>
            this.getLeafKeys(item,arr))
        },
        // 监听分配权限对话框的关闭事件
        setRightDialogClosed(){
            this.defKeys =[]
        },
        // 监听分配权限对话框确定按钮事件
        async allotRights(){
            const keys =[
                ...this.$refs.treeRef.getCheckedKeys(),
                ...this.$refs.treeRef.getHalfCheckedKeys()
            ]
            const idStr = keys.join(',')
            const {data:res}=await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
            if(res.meta.status !==200)return this.$message.error('分配权相失败')
            this.$message.success('分配权限成功')
            this.getRolesList()
            this.setRightDialogVisible = false
        }
    },
}
</script>
<style lang="less" scoped>
.el-tag{
    margin: 7px;
}
.bdtop{
    border-top: 1px solid #eee;
}
.bdbottom{
     border-bottom: 1px solid #eee;
}
.vcenter{
    display: flex;
    align-items: center;
}
</style>